Old San Juan Thermal Spa: Hot/Cold Plunge, Sauna, Steam & Gym

Unlimited, full-day access to a rare urban sanctuary in the heart of Old San Juan. Las Ruinas is a full-circuit thermal spa, bathhouse, and wellness gym built to quiet your mind and body. Move through four wellness environments at your own pace during your session: the heated swimming pool and contrast plunge pools, three distinct heat sanctuaries (dry sauna, infrared sauna, and eucalyptus steam room), a restorative lounge with unlimited herbal tea and light snacks, and a fully equipped gym. Every visit includes a robe, slippers, a dedicated locker, and unlimited fresh towels — just bring a swimsuit. Between circuits, sink into the cozy lounge wrapped in soft towels. This is wellness done simply and completely. Before you leave, refuel at the in-house Smoothie Spa with nourishing blends made to refresh. Located steps from Old San Juan's historic streets — the perfect pause in the middle of any itinerary We close daily at 7:00 PM and at 8:00 PM on weekends!